Chiral Teleinduction in Asymmetric Polymerization of 3,5-Bis(hydroxymethyl)phenylacetylene Having a Chiral Group via a Very Long and Rigid Spacer at 4-Position
作者:Yunosuke Abe、Toshiki Aoki、Hongge Jia、Shingo Hadano、Takeshi Namikoshi、Yuriko Kakihana、Lijia Liu、Yu Zang、Masahiro Teraguchi、Takashi Kaneko
DOI:10.1246/cl.2012.244
日期:2012.3.5
A new polymer prepared by polymerization of 3,5-bis(hydroxymethyl)phenylacetylene having a chiral menthyl group via a very long and rigid spacer by an achiral rhodium complex with triethylamine as an initiator showed strong CD absorptions assigned to the main chain in spite of the long distance (23 Å) between the chiral group and the polymerizing group in the monomer. This distance is the longest to the best of our knowledge. In addition, switching between the two chiralities of the resulting polymer was realized in the CD spectrum.
一种通过非手性铑络合物与三乙胺作为引发剂,通过一个非常长且刚性的间隔基将手性薄荷基团引入到3,5-双(羟甲基)苯乙炔单体中聚合得到的新型聚合物,尽管手性基团与聚合基团在单体中的距离(23 Å)非常长,但仍显示出与主链相关联的强烈的圆二色吸收。据我们所知,这一距离是最长的。此外,在圆二色光谱中实现了所得聚合物两种手性之间的转换。